Macrodarumoides petalinus, Che, Yanli, Zhang, Yalin & Wang, Yinglun, 2012

Che, Yanli, Zhang, Yalin & Wang, Yinglun, 2012, A new genus of the tribe Issini (Hemiptera, Fulgoromorpha, Issidae) from China, ZooKeys 228, pp. 51-58 : 53-55

Macrodarumoides petalinus sp. n. Figs 1 –37– 16

Description.

Length, male (including tegmen): 8.1mm, length of tegmen: 6.0mm; female (including tegmen): 8.3mm, length of tegmen: 6.1mm.

Body brown (Fig. 1). Vertex with disc brown and lateral margins black. Eyes black brown. Frons brown with median carina paler and lateral margin black at apical half. Clypeus brown, rostrum pale brown. Pronotum, mesonotum, tegmen and legs brown; wing dark brown. Abdomen ventrally and dorsally brown, disc dark brown.

Vertex long and horizontal, approximately triangular, disc depressed, with 2 despressions near hind margin (Fig. 1); vertex 1.8 × wider at apex than length in midline. Frons with disc distinctly elevated, with median carina (Fig. 2); oblique between median carina and lateral margin, frons curved towards apex in lateral view (Fig. 3), 1.1 × wider at widest part than at base, 2.8 × longer in midline than at widest part. Frontoclypeal suture nearly straight (Fig. 2). Thorax (Fig. 1): disc of pronotum with 2 pits; mesonotum short and broad, greatest width 1.7 × medial length. Tegmen 2.5 × longer than widest part; Sc long, reaching beyond midlength; Sc and R forked near apex, M 4-branched, Cu not forked, claval suture only reaching to middle of sutural margin (Figs 1, 3, 7). Wing 0.7 × length of tegmen, veins distinctly reticulate (Fig. 8). Spinal formula of hind leg 11-(5-6)-2.

Male genitalia. Anal segment in dorsal view (Fig. 10) distinctly longer than greatest width apically, apical margin strongly convex, lateral margin strongly divergent from base to apex, anal tube situated near middle; in lateral view ventral margin convex at midlength, nearly truncate in distal half (Fig. 9). Pygofer in lateral view with hind margin evenly convex near middle and slightly convex at base (Fig. 9). Phallus in profile shallowly curved with 2 long spiniform processes directed cephalad at midlength. Aedeagus in profile with apex bifurcated (Fig. 11); dorsal lobe (Figs 11, 13) in dorsal view tri-lobed near apex, with apical margin slightly concave at mid, lateral margins curved downward and encasing lateral and ventral lobe; lateral lobes in lateral view divided and tapered into fingers (Fig. 11); ventral lobe with apical margin convex and arched at mid, and lateroapical angle rounded in ventral view (Fig. 12). Genital styles in lateral view nearly triangular, apical margin curved and arched, dorsal margin produced into one large process near apex; base of process acuminate and apex obtusely rounded in caudal view (Fig. 9).

Female genitalia. Anal segment in dorsal view (Fig. 15) slightly longer than greatest width with lateral margins convex, apical margin convex and arched, anal tube situated at basal half; in lateral view ventral margin concave at base, nearly truncate in distal half (Fig. 14). Ovipositor with anterior connective lamina of gonapophyse VIII curved dorsally, with 5 nearly parallel spines; tooth near lateral margin larger. Gonoplac stout, strongly convex and subquadrate, with apical margin polished (Fig. 14). Pregenital sternite with apical margin distinctly convex at midlength (Fig. 16).

Material examined.

Holotype, male, China: Yunnan, Mt. Baoshan, 1900m, 20 November 1999, coll. Qin Daozheng (NWAFU). Paratypes, one male, one female, China: Guangxi, Leye, Tonglelinchang, 15 September 1980, coll. Lu Junsheng (NWAFU); one female China: Guangxi, Leye, Yachangyanpeng, 24 September 1980, coll. Lu Junsheng (NWAFU); one female, same data as holotype (NWAFU); two males, one female, China: Yunnan, Mt. Baoshan, 22 August 1979, coll. Cui Jianxin (NKU).

Remarks.

This species can be differentiated from Eusarima contorta Yang, 1994 by the following characteristics: 1) vertex long, approximately triangular, the latter with vertex short and subquadrangular; 2) frons only with median carina, the latter with median and lateral carinae; 3) wings narrow, netlike and anal lobe rudimentary, the latter, wings broad, longitudinal veins distinct with little cross veins, and anal lobe developed.

This species resembles Macrodaruma pertinax Fennah, 1978 (Figs 4-6) in shape, but differs from the latter in the following characteristics: 1) lateral margins of vertex and lateral margins of pronotum not elevated, the latter with lateral margins of vertex and lateral margins of pronotum elevated foliately, 2) claval suture present, the latter without claval suture, 3) wing with 3 lobes, the latter with wing not split.

Etymology.

The specific name is derived from the Latin word “petalinus”, referring to the dorsal lobe of aedeagus being concave with the lateral margin distinctly reflected as a petal.